<textarea cols="60" rows="8" readonly><table style="width:500px">
	<tbody>
		<tr>
			<td style="border:2pt solid red;">&nbsp;</td>
			<td>&nbsp;</td>
		</tr>
	</tbody>
</table></textarea>

<textarea id="editor1">
<p>Replace this text in source mode.</p>
</textarea>
<script>
	var editor = CKEDITOR.replace( 'editor1', {
		extraAllowedContent: 'td{border,border-*}'
	} );
</script>
